Verify Your Stamps

Confirm authenticity by comparing original files against FairStamp receipts

Client-side verification

WASM-accelerated

Files never uploaded

1Load Receipts

Drop a ZIP file with receipts, or individual .fsreceipt files

Drag ZIP or .fsreceipt files here

or click to browse

Privacy First

All file hashing happens in your browser. Your files are never uploaded to our servers.

Cryptographic Proof

SHA-256 hashes prove your file is identical to the original stamped content — byte for byte.

Evidence-Ready

Each verification generates a tamper-evident receipt suitable for compliance evidence workflows (e.g., MACH-720). Public blockchain anchoring is optional and not enabled here.